Scaffold.



F. W. WATSON.

SCAFFOLD. APPLICATION FILED JULY I. 1916.

Patented Apr. 10,1917.

PW. WATSON an ar FRANK W. WATSON, 0F CEDAR FALLS, IOWA.

SCAFFOLD.

Specification of Letters Patent.

Patented Apr. 10, 1917.

Application filed July 1, 1916. Serial No. 107,086.

To all whom it may concern:

Be it known that I, FRANK W. WATSON, a citizen of the United States,residing at Cedar Falls, in the county of Blackhawk and State of Iowa,have invented certain new and useful Improvements in Scafl'olds, ofwhich the following is a specification, reference being had to theaccompanying drawmgs.

This invention relates to certain improvements in scaffolds and hasrelation more particularly to a device of this general characterespecially designed and adapted for use in connection with roofs; and itis an object of the invention to provide a scaffold of this generalcharacter having novel and improved means whereby it may be readily andeifectively adjusted in accordance with the diifering inclination ofroofsand whereby the same may also be adjusted in such a manner as toserve as a horse.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my 1mproved scaffoldwhereby certain important advantages are attained and the device isrendered simpler, less expensive and otherwise more convenient andadvantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanyingdrawings, wherein Figure 1 is a view in elevation of a scaffoldconstructed in accordance with an embodiment of my invention and inapplied position;

Fig. 2 is a detached view in perspective of one of the beams employed inmy invention as herein disclosed;

Fig. 3 is a detached view in perspective of one of the legs as hereinembodied; and

Fig. 1 is an elevational view disclosing my improved scaffold assembledfor use as a horse.

As herein disclosed, my improved scaffold comprises two coactingsections and when applied upon a roof one section serves to coact withthe second section for maintaining the scaffold as a whole in properposition. As each of the sections is substantially identical, it isthought that a description of one will suflice for both.

As herein disclosed, each of the sections of my improved scaffoldcomprises an elongated channel beam 1 of predetermined length and havingpivotally engaged with its outer end the upper section 2 of a supportingleg L, said pivotal connection 3 being such as to permit said section 2being separated from the beam 1 as desired.

Coacting with the section 2 is a second section 4 of predetermineddimensions and provided with an elongated longitudinally disposed slot 5through which the clamping members 6 carried by the section 2 aredisposed. By this arrangement it will be perceived that the sections 2and A may be longitudinally adjusted in order to maintain the beam 1 ina horizontal position irrespective of the inclination of the roof towhich the scaffold may be applied. The lower end of the section 1 isenlarged transversely t0 afford the foot 7 provided with the toothedengaging edge 8 for a purpose which is be lieved to be self-evident.

The flanges of the beam 1 are downwardly disposed and are providedadjacent their opposite ends with the transversely alined openings 9 toafford a means whereby the brace member B may be engaged therewith. Asherein disclosed, the brace B comprises two sections and when the deviceis adapted to be employed as a scaffold the upper end of the section 10of the brace B is pivotally engaged with the inner end of the beam 1through the medium of the removable pintle 11, while the second section12 of the brace B is pivotally engaged with the leg L. In order that thesections 10 and 12 may be longitudinally adjusted one relative to theother, the brace B is provided with an elongated longitudinally disposedslot 14; through which is adapted to be disposed the clamping members 15carried by the second section 12.

When in applied position, the inner ends of the beams 1 are adapted tocontact with the ridge portion of a roof and are detachably connectedone with the other through the medium of the removable pin 16.

I also find it of advantage to provide the beams 1 with the loop rods 17which serve to assure the scafiold boards being maintained againstaccidental displacement.

As is illustrated particularl in Fig. 4, the sections of my improved scaold may be assembled in such a manner as to serve as a horse and inwhich event the legs L are secured to the opposite ends of a beam 1 andthe braces B disposed in crossed relation, as particularly illustratedinsaid Fig. 4, and it is for this reason that theopposite ends i of theflanges of 'eacheof the beams 1 are provided with the transverselyalined open- B are offa width less than the width of the beamsl and areof such relative widths as to .permitethe same to assume the crossedrelation as disclosed in Fig. 4:.

From the foregoing description; it. is

V thoughtto be obvious that a scaffold constructed in accordance with'myinvention is of an extremely snnple and comparatively inexpensive natureand is particularly well I Copies oifr'this patent may be obtained forfor this reason I do not wish to be understood as limitlng myself to theprecise arrangement and formation of the several parts herein shown incarrying out my invention in practice, except as hereinafter e claimed.ings 9 here1n'before referred to. The braces I claim:

A scaffold structure comprising two beams, a leg at each end of eachbeam and a brace connecting each leg to its beam, the leg and brace atone end of each beam being detachable, and means for detachablyconnecting such ends ofthe two beams together I whereby either-twoplatform supports or a single gable spanning support may be provided. H

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

FRANK W. WATSON.

O. B. SAUTER, R. A. SAUTER.

1 Witnesses five cents each by addressing the Commissioner of Patents,Washington, D. G.

